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CHAPPY Japan Address Preflight
x402
CHAPPY Japan Address Preflight is a paid API for AI agents from chappy-japan-address-preflight.pre23964wb.workers.dev, paid per call via x402, $0.02/call, status unknown (last checked 2026-09-15).
Validates a Japanese address at the town level against Japan Post data, returning a match status (MATCHED, AMBIGUOUS, CONFLICT, or NOT_FOUND) with ordered candidates and safe next-action guidance.
Price / call$0.02
Success—
StatusUnknown
How this service works
Town-level Japan Post evidence for buyer agents. Returns MATCHED, AMBIGUOUS, CONFLICT, or NOT_FOUND with ordered candidates, provenance, limitations, and the next safe input action.
Output
Returns a status of MATCHED, AMBIGUOUS, CONFLICT, or NOT_FOUND along with an ordered list of candidate addresses sourced from Japan Post evidence, provenance details, any known limitations, and a recommended next safe input action for the calling agent to take.
Example use cases
E-commerce delivery address check
“We have a customer order shipping to 〒100-0001 with address '東京都千代田区千代田1' — run a delivery preflight on it so we can confirm the postal code and town match before we hand it off to the carrier.”
Vendor onboarding address verification
“We're onboarding a new Japanese supplier who listed their address as 〒530-0001 大阪市北区梅田1丁目 — can you do a vendor_onboarding preflight check to confirm that address is real and flag any conflicts?”
Web form submission address validation
“A user just submitted a Japanese address in our form: postal code 2310023, address '神奈川県横浜市中区山下町1' — run a form_submission preflight so we know if it's matched, ambiguous, or not found before we save it.”
Technical details
Endpoint
POSThttps://chappy-japan-address-preflight.pre23964wb.workers.dev/v1/jp/address/preflightWhen to prefer
Choose this endpoint when you need town-level Japan Post evidence for a Japanese address before committing to a delivery, payment, form save, or vendor record — especially when you need a structured status (MATCHED/AMBIGUOUS/CONFLICT/NOT_FOUND) plus actionable next-step guidance rather than a simple boolean. It is particularly suited for agentic workflows that need provenance and candidate lists to handle ambiguity gracefully. Prefer it over generic geocoding APIs when Japan-specific postal data fidelity and use-case-aware recommendations are required.
Side effects
- NOT_FOUND returned when postal code or address text does not correspond to any Japan Post record
- AMBIGUOUS returned when multiple town-level candidates exist and cannot be resolved from the input alone
- CONFLICT returned when the postal code and address text disagree at the town level
- Malformed postal code (wrong digit count or unsupported characters) may result in a validation error
- raw_address below minimum length or exceeding 512 characters will be rejected
- Missing required fields (postal_code or raw_address) return a 400-level error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| use_case | string | |
| postal_code | string | Japanese seven-digit postal code; full-width digits and common hyphens are accepted |
| raw_address | string | Japanese address text to compare at the town level |
Tags
x402
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